Remove balloon notification code. The last user was the Linux GTK port but that's deleted now.

chrome/browser/notifications/message_center_notifications_unittest_win.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/testing_pref_service.h"
 #include "base/run_loop.h"
 #include "base/test/test_timeouts.h"
 #include "base/values.h"
 #include "chrome/browser/notifications/message_center_notification_manager.h"
 #include "chrome/browser/notifications/notification.h"
-#include "chrome/browser/notifications/notification_prefs_manager.h"
 #include "chrome/browser/notifications/notification_test_util.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/scoped_testing_local_state.h"
 #include "chrome/test/base/testing_browser_process.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/message_center/fake_message_center_tray_delegate.h"
 #include "ui/message_center/fake_notifier_settings_provider.h"
 #include "ui/message_center/message_center_impl.h"
 #include "ui/message_center/message_center_tray.h"
 #include "ui/message_center/message_center_types.h"
 #include "ui/message_center/notifier_settings.h"
 
 namespace message_center {
 
 class MessageCenterNotificationManagerTest : public testing::Test {
  protected:
-  MessageCenterNotificationManagerTest() {
-    NotificationPrefsManager::RegisterPrefs(local_state_.registry());
-  }
+  MessageCenterNotificationManagerTest() {}
 
   virtual void SetUp() {
     // Clear the preference and initialize.
     local_state_.ClearPref(prefs::kMessageCenterShowedFirstRunBalloon);
     first_run_pref_.Init(prefs::kMessageCenterShowedFirstRunBalloon,
                          &local_state_);
 
     // Get ourselves a run loop.
     run_loop_.reset(new base::RunLoop());
 
@@ skipping 83 matching lines @@
 TEST_F(MessageCenterNotificationManagerTest,
        FirstRunNotShownWithMessageCenter) {
   TestingProfile profile;
   notification_manager()->Add(GetANotification("test"), &profile);
   message_center()->SetVisibility(message_center::VISIBILITY_MESSAGE_CENTER);
   run_loop()->RunUntilIdle();
   EXPECT_FALSE(notification_manager()->FirstRunTimerIsActive());
   EXPECT_FALSE(DidFirstRunPref());
 }
 }  // namespace message_center